void Start()
    {
        service = new SpreadsheetService(SpreadsheetInfo.CREDENTIALS_PATH, SpreadsheetInfo.SPREADSHEET_ID);

        service.AddValues(new List <object>()
        {
            "elemento 1", "elemento 2"
        });

        service.UpdateCell("A2", "atualizado");

        IList <IList <object> > values = service.GetValues("A2:B2");

        foreach (var row in values)
        {
            foreach (var col in row)
            {
                Debug.Log(col);
            }
        }
    }